Supervisory control panel



o. PLECHL ET AL.

SUPERVISORY CONTROL PANEL Sept. 27, 1932.

Filed Dec. 6, 1950 /n ven/ors Of/o F/ech/ Johann La/iz/(o g ZO E. E. y v orney.

i eating measuring instrument.

Patented Sept. 27, l932 UNITED STATES;

PATENT Free.

o'rro PLECHL, or PFAFESTATTEN, EARVIENNA, AND Jor ANN LATZKO, on VIE NA, AUSTRIA, AssIGNons r0 AKTIENGESELLSCHAFT BROWN, BOVERI & CIE, onBAnEN, SWITZERLAND, AJOINT-STOCK COMPANY on SWITZERLAND I A 'sUI'EavIsoItY CONTROL PANEL Application filed December 6, 1930, Serial No 500,592, and in Germany December 7, 1929.

illustrate the several portions of a distributing system in which the flow of gases, liquids or electricity is to be controlled. Such panels are also required to show the conditions existing in the medium to be controlled and must, therefore, be provided with indi- In acontrol panel, it is desirable that the portions ofthe installation in which the medium to be controlled is flowing orl is under pressure be illuminated while the portions of the installation not containing themediumbe unilluminated or be illuminated in a different color. It is, therefore, necessary that the control panel be so constructed that'all possibility of mistake as to the indications thereof are avoided. V

Itis, therefore, among the ob ects of the present invention to provide a supervisory control panel for flowing media distributing installations in which transparencies symbolize thedistributing installation. T r

Another ob'ect ofthe invention is to provide a supervisory control panel for'flowing media distributing installations inwhichthe illumination of the symbolic transparencies indicates the presence or flow of the media.

Another object of the invention is to provide a supervisory control panel of the character above mentioned in which the symbolic transparencies are edged with colored bands to designate the media flowing therethrough.

Objects and advantages, otherv'than those above set forth, will be apparent from the following description when read in connec- 1 parent areas of the valvemost clearly.

ditionsuexisting in an electric circuit may be indicated onthecontrol panel arranged according to Figure 1. a

Referring more particularly to the drawmg by characters of reference, the reference 7 to numeral 1 designates a fragment of a panel which is preferably ofglass plate coated with l a dark substantially opaque coating. A quantity of the panel coating is removed as shown at 2 to form. an entirely trans parent path indicating a conduit or a conductor which is edged withxbands'fi' of an entirely opaque coating difierent from the coating on other portions of thepanel for the purpose of defining the conduit or con- M ductor 2 more clearly when the same is illuminated from the rear by any of the numerous well-known methods. The edgings then indicate the walls or the outer surfaces of a sectioned conduit or conductor. 1 The dark coating of the panel 1 is likewise removed as shown at 4 in such manner as to lndicate, diagrammatically by use of a symbol, somemeans such as a switch or valve for blocking the conduit or conductor 2again'st the flow of the medium'to be controlled. The transparent valve symbol l is edged with an opaque coating 5 on the panel 1, as is "the case for the conductors, to define the trans- 80 In any installation for the distribution of a flowing medium it is necessary that inclicating measuring'instruments beprovided to show such conditions of the medium as the quantity, pressure, velocity, etc. Such measuring instruments should, of course, be of the nature and'types adapted'for the. measurement-and indications of-conditions' of the particular medium to be controlled; In Figure 2 of the drawing I have, therefore, illustrated an electrical instrument 17 having its operatingcoil 17 connected with the I conductor 18, across a shunt '19, "of an electriccircuit including-an electric generator .ZOrs'upplying a consuming device 21. The measuring devicecarries an oscillating member '22 secured to the core of the instrument "coil as shown.

The member 22 may be formed as a pointer or as a plate having a slot, on other configuration; A lamp 23 is placed behind the electrical instrument 17 and the light therefrom focused upon the member 22 of the instrument by a lens 24,

movement of the member 22 onto; the scale 10 by an adjusting lens 25. Thus any movement of the member 22 by the measuring instrument 17 will, if the member be formed as a pointer, cause the lengthening or'shortening of the shadow 9 upon the scale 10 thereby producing in the diagram a clearly visible indication of current, or other con ditions, of the circuit of the generator 20. and conductor 18. If, on the other hand, the

member 22 beformed as an opaquesheet with a cutout slot or opening of other configuration, any movement ofthe member 2-2, by the measuring instrument, willcause the lengthening or shortening of a light arrow I projected upon the scale 10' instead of the shadow 9. The scale 10 is surrounded by an opaque edging 11 which emphasizes the distinction between the shadow' 9 and the scale 10. hen thediagram is to be employed for indicating the conditions of certain medium,

particularly the pressure, quantity, t em-V perature, purity, homogeneity, or other conditions ofthe med1um,, theinstruments may be arranged directly in or on the conduit section 2. When not placed on theconduit section 2, it is desirable that the point at i which the measurement is taken be indicated by connecting the instrument with a. 3. 7

- or- 8 with the point of measurement by a lead line of adifierent colorshown at 13so formed as todistinguish from the other portions of the panel. It will be understOOd that a plurality of instruments may be so arranged as to obtain'shadows of the respective indicators on the same scale which then permits a readycomparison of the various values shown.

In any case, even through the shadows 9 indicate the direction of flow, it is des rable,

at suitable points along. the conduit. section 2, to provide arrows pointing in opposite directions as at 15 and-16 to show, by illu-' mination or the absence of illumination, the direction of flow of the controlled; medium.

When the panel is used to indicate thefiow of; diiferent media or media under different conditions as a steam distributing installation handling superheated steam, saturated, steam,

condensate or cooling Water, either the edgings 3 and 11- are of different colors or different colored lamps are arranged behind the transparent symbolic panel portions 2 and 10. Illumination of the transparent portions then idicates the presence and the diflerent the media to be controlled.

colors indicate the conditions or the type of The degree or colorof the illumination may also indicate the conditions of the medium in the several conduits.

Light is projected from the lamp 23 across the path of It will be understood of course that the illuminated supervisory control panel illustrated and described may be operated by remote control due to operation of the various devices symbolized 011 the panel or that a switch desk having'auxiliary controlling apparatus preferably arranged in a diagrammatie manner similar to that shown on the- *-panel I may be arranged cent the panel to supervise the control of the devices indicated on the panel. Each piece of auxiliary apparatus is preferably mounted directly adjacent or at the point of the operating device which is symbolized on the panel. It is then possible to determine exactly and to control the distributing installation'properly dependent on the condition of the apparatus on the desk as shown by the control panel. v

Although but one embodiment of the present invention has been illustratedand deadj ascribed, it will be apparent tothose skilled :of an opaquecolor defining the edges ofthe symbols.

2. In a control wall, a substantially opaque coating for said wall, portions of said coating being removed to form. symbolic transparencies, and bands of an opaque coating defining the edges of thesymbols', the colors of said: coating and of said edging bands difiering. a

3, In a control panel for supervising-the distribution of flowing media, a transparent Wall, a substantially opaque coating for'said wall, portions of said coating being removed to form symbolic transparencies, bands of an opaque coating defining the edges of the symbols and transparent scales arranged on said wall to receive indications of the con-ditions of the media.' 7

In a. control panel for supervising the distribution offlowing media, a transparent wall, a substantially opaq-ue coating for said wall, portions of said coating being removed to form symbolic transparencies, bands .of an opaquecoating defining the edges of the symbols, transparent scales arranged in the symbolic transparencies, and transparent scales arrangedadjacent the symbolictransparencies, said-scales receiving indications -of the conditions of themedia.

a control panel for supervising the distribution of flowingmedia, a transparent Wall, a substantially opaque-coating for said panel for supervising the rdistributionofflowing media, a transparent Wall, portions of said coating being removed to form symbolic transparencies, bands of an opaque coating defining the edges of the symbols, transparent scales arranged in the symbolic transparencies, and transparent scales arranged 2lCl]21C(-)11t the symbolic transparencies, said scales receiving indications of the conditions of the media, a lead line connecting said adj acent scales with the point of the symbolic transparencies at which an indication of the conditions in the media is desired.

6. In a control panel for supervising the distribution of flowing media, a transparent wall, a substantially opaque coating for said walls, portions of said coating being removed to form symbolic transparencies, and bands of an opaque color defining the edgesof the symbols, the colors of said edging bands difiering from the color of said coating, and the colors of said edging bands diifering dependent on the media indicated in the symbolic transparencies.

7. In a supervisory control panel forsupervising the distribution of flowing media, a transparent wall, a substantially opaque coating for said wall, portions of said coating being removed to form symbolic transparencies, bands of an opaque coating defin,

ing the edges of the symbols, and transparencies arranged to indicate the direction of the flow of the media.

In testimony whereof we have hereunto subscribed our names this 19th day of November A. D. 1930.

JOHANN LATZKO. OTTA PLECHL. 

